Plugin parts

For: plugin authors.

Choose the part that owns the behaviour you are adding. An agent makes model-guided decisions, a tool exposes callable functions and a flow declares a sequence of steps. Hooks check work at defined points; connections and event sources integrate outside systems.

• Define an agent: Set instructions, runtime, model and tools.
• Write a tool: Expose an MCP function or a flow tool.
• Write a flow: Connect steps, conditions and approvals.
• Add skills: Give agents task instructions and supporting files.
• Apply hooks: Check tool calls and job boundaries.
• Connect a system: Provide per-call credentials.
• Receive events: Validate and normalise outside deliveries.
• Choose a harness: Run an existing agent runtime as a job.